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  • Plants having little or no secondary growth are  Option: 1 ConifersOption: 2 De

Plants having little or no secondary growth are
 

Option: 1

Conifers


Option: 2

Deciduous angiosperms


Option: 3

Grasses


Option: 4

Cycads

 


Answers (1)

best_answer

Secondary Growth -

  • The growth that occurs along the main axis is called the primary growth. It occurs via the activity of the primary meristem.
  • In most of the monocots and some herbaceous dicots, there is only primary growth.
  • In the majority of angiosperms and gymnosperms, there is an increase in the girth of the stems and roots. Such growth in called the secondary growth. 
  • Secondary growth occurs through the activity of lateral meristem or secondary meristem.
  • Secondary growth occurs in two patterns:
  1. Intrastellar secondary growth: It occurs through vascular cambium. It involves the formation of wood (secondary xylem) and secondary phloem.
  2. Extrastellar secondary  growth: It occurs through the activity of cork cambium. It involves the formation of periderm.
     

A majority of the monocots do not show secondary growth.

Posted by

jitender.kumar

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